@SmartonoseN jminer reads the size of chunkPartNonces into memory before it computes the deadlines. Without that setting, it would load the staggersize into memory and thats a problem on big optimized plotfiles and small memory.
So if staggersize is bigger than chunkPartNonces, the data-packages will be split into parts, and first part can be computed while 2nd is still loading.
So if you have memory issue reduce chunkPartNonces...
@zyzzyva Well, i also use 960000 :-)
But it is just a fine tuning anyway, no big need to change the default if there is not a memory issue, even if i choose a quite low default, to prevent issues on machines with small memory.